Based upon extensive data from a national high school educational testing program, the standard deviation of national test scores for mathematics was found to be 118 points. If a sample of 324 students are given the test, what would be the standard error of the mean?

The standard error of the mean would be 6.5556.

Step-by-step explanation:

The standard error of the mean is given by the following formula:

In which n is the size of the sample and is the standard deviation of the population.

In this problem, we have that:

If a sample of 324 students are given the test, what would be the standard error of the mean?

The standard error of the mean would be 6.5556.

step-by-step explanation:

given that there are two triangles j'k'l' and jkl>

the former is got by dilating the second one.

when drawn on a grid, (graph paper) coordinates of vertices of first triangle is

(6,12)j, (9,6)k and (12,9)l

side jk has length = distance between j and k

=

side j'k'=distance between j' and k'

=

ie j'k'l' has sides 1/3 of that of corresponding sides of jkl.

hence scale factor of 1/3 is used to get j'k'l'from jkl

required rate of return = 0.166 = 16.6%

step-by-step explanation:

under the capital asset pricing model (capm), the required or expected rate of return for a particular security or asset is given using the formula:

required rate of return = risk-free rate + beta*(market risk premium)

we are given that;

risk-free rate = 4% = 0.04

beta = 1.4

market risk premium = 9% = 0.09

we simply plug these values into the above formula;

required rate of return = 0.04 + 1.4*(0.09)

required rate of return = 0.04 + 0.126

required rate of return = 0.166 = 16.6%